Ionia Weather Forecast

    • 65
    • 79

    Increasing Clouds

    • 61
    • 81

    Rain Showers

    • 55
    • 70

    Slight Chance Rain Showers

    • 56
    • 75

    Mostly Sunny

    • 61
    • 79

    Partly Sunny

    • 60
    • 79

    Slight Chance Thunderstorms

Today 20 Jul Ontario

Sunny. Highs Ranging from the mid 70s on the Hilltops to around 80 across the lower Elevations. Light southwest Winds.

Tonight 20 Jul Ontario

Becoming mainly clear. Lows in the lower 50s. Light southwest Winds.

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  • Temperature Real-Time

Ionia Temperature Statistics

July Temperature

Rochester, Greater Rochester International Airport (15.5 miles)

  • Lowest 12 July, 2026

    55.7 °F

  • Average July

    75.6 °F

  • Highest 1 July, 2026

    94.6 °F

Climate (2021–2026)

Rochester, Greater Rochester International Airport (15.5 miles)

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  • Average Low 2021–2026

    42.3 °F

  • Average 2021–2026

    50.8 °F

  • Average High 2021–2026

    59.6 °F
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